package com.dempsey.springboot06securityjwtredis.framework.config;

import com.dempsey.springboot06securityjwtredis.framework.security.filter.JwtAuthenticationTokenFilter;
import com.dempsey.springboot06securityjwtredis.framework.security.handle.AuthenticationEntryPointHandler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * @author Dempsey
 * Date 2022/2/9
 * Description
 */

@EnableWebSecurity
@EnableMethodSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService customUserDetailsService;

    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointHandler unauthorizedHandler;

    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(customUserDetailsService);
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                // CRSF禁用，因为不使用session
                .csrf().disable()
                // 认证失败处理类
                .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
                // 基于token，所以不需要session
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                // 禁止弹窗
                .headers().frameOptions().disable().and()
                // 过滤请求
                .authorizeRequests()
                // 对于登录login允许匿名访问
                .antMatchers("/index", "/login").permitAll()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();
        http.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
    }
}
